electrometric

Since the presence of radium could often not be detected by the balance or by the spectroscope, novel electrometric methods had to be developed.

Trafficking Materials and Gendered Experimental Practices: Radium Research in Early 20th Century Vienna 2007

The enumeration of alpha particles is done by an electrometric method due to Rutherford; this method has been brought to perfection by means of a photographic recording apparatus.

Marie Curie - Nobel Lecture 1966

They are identifiable either by the electrometric method, or very simply by the impression they produce on a photographic plate.

Marie Curie - Nobel Lecture 1966

Radioactive analysis by electrometric methods allows us to calculate to within 1% a thousandth of a milligram of radium, and to detect the presence of 10-10 grams of radium diluted in a few grams of material.

Marie Curie - Nobel Lecture 1966

(Fig. 2), in which the fine wire that served as an electrometric needle was of magnetized steel suspended by a cotton thread.

Scientific American Supplement, No. 421, January 26, 1884 Various

Needless to say, the place for such an electrometric installation was hardly the crowded and damp little room in which I had to set it up.

Pierre Curie 1923

We had been obliged to start them in an abandoned storeroom across a court from the workroom where we had our electrometric installation.

Pierre Curie 1923

During the course of their experiments on piezo-electricity the Curies were obliged to employ electrometric apparatus, and, not being able to use the quadrant electrometer known at that time, they developed a new form of that instrument, better adapted to their necessities.

Pierre Curie 1923

Radioactive analysis by electrometric methods allows us to calculate to within 1% a thousandth of a milligram of radium, and to detect the presence of 10-10 grams of radium diluted in a few grams of material.

Radium And The New Concepts In Chemistry: Nobel Lecture 1911

The enumeration of alpha particles is done by an electrometric method due to Rutherford; this method has been brought to perfection by means of a photographic recording apparatus.

Radium And The New Concepts In Chemistry: Nobel Lecture 1911